R+18=15

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Solution for R+18=15 equation: 


Simplifying
R + 18 = 15

Reorder the terms:
18 + R = 15

Solving
18 + R = 15

Solving for variable 'R'.

Move all terms containing R to the left, all other terms to the right.

Add '-18' to each side of the equation.
18 + -18 + R = 15 + -18

Combine like terms: 18 + -18 = 0
0 + R = 15 + -18
R = 15 + -18

Combine like terms: 15 + -18 = -3
R = -3

Simplifying
R = -3

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